KR102010672B1 - A Fryer Capable of Preventing Fire - Google Patents

Abstract

The present invention relates to a fryer capable of preventing fire, and more particularly, a first temperature sensor formed at a height corresponding to an overheat prevention sensor, and a second temperature sensor formed at one side of a heating part in the oil tank to measure the temperature in the oil tank. To calculate the difference by measuring the temperature, and if the temperature of the second temperature sensor is higher than the reference temperature higher than the temperature of the first temperature sensor by generating a fire hazard signal to stop the operation of the heater, It is a fire preventable fryer that detects the danger of fire in advance and prevents the fire even when the oil in the oil tank is the biggest cause.

Description

Fryer Capable of Preventing Fire

The present invention relates to a fryer capable of preventing fire, and more particularly, a first temperature sensor formed at a height corresponding to an overheat prevention sensor, and a second temperature sensor formed at one side of a heating part in the oil tank to measure the temperature in the oil tank. To calculate the difference by measuring the temperature, and if the temperature of the second temperature sensor is higher than the reference temperature higher than the temperature of the first temperature sensor by generating a fire hazard signal to stop the operation of the heater, It is a fire preventable fryer that detects the danger of fire in advance and prevents the fire even when the oil in the oil tank is the biggest cause.

In general, when cooking fried food in a restaurant, a large amount of frying oil is put in a tank of a certain capacity and heated by a gas or electric heater to fry the food.

Such a large-scale commercial fryer heats a large amount of oil to a high temperature of 180 ° C. or higher, and therefore is always exposed to a high risk of fire. The oil used in the fryer has a flash point of 220 ° C and a flash point of 270 ° C. When the oil temperature rises above 220 ° C, the risk of fire increases rapidly.

The fire of the commercial fryer continues due to the failure of the parts, and the heating part continues to operate and the temperature of the oil rises to 220 ° C or higher, or the oil is started with less than the proper dose, or the oil is discharged again after the oil is discharged. Occurs when starting heating without putting.

About 20% of fires are caused by abnormality of double parts, and in most cases, more than 80% of fires are caused by a mistake of a user who starts heating with little or no oil. In particular, in the case of commercial fryer, after draining the oil used the previous day and refilling the oil, the worker will go to work the next day and use the fryer. If the worker does not fill the oil the day before, the worker will start heating without oil the next day. Fires are very frequent. In addition, since a commercial fryer is often used by an inexperienced worker, there is a problem that often less oil or no oil is filled.

However, the general fryer is to measure the temperature of the oil by the temperature sensor formed on the upper side of the oil tank as described below, and when the temperature of the oil rises above a certain temperature to stop the operation to prevent overheating or fire, If the oil is insufficient, the temperature of the oil cannot be properly measured, and if there is no oil in the oil tank, the operation of the heating unit cannot be prevented from continuing, and thus the risk of fire is not blocked at all.

(Patent literature)

Patent No. 10-0350040 (registered Aug. 12, 2002) "Fryer system and its heating control method"

The present invention has been made to solve the above problems,

An object of the present invention is to provide a fryer capable of preventing the fire to prevent the fire by detecting the risk of fire in advance even when the oil in the oil tank that is the biggest cause of the fryer fire is insufficient or absent.

It is an object of the present invention to provide a fryer capable of preventing fire to enable accurate detection of a fire risk.

An object of the present invention is to provide a fryer capable of preventing a fire to minimize the oxidation of oil by discharging the residue accumulated on the bottom of the oil tank at an appropriate time.

The present invention is implemented by the embodiment having the following configuration to achieve the above object.

According to one embodiment of the invention, the fire-resistant frying machine according to the present invention, the oil tank containing the oil for cooking food, the heating unit is installed in the oil tank to heat the oil contained in the oil tank, the operation of the fryer It includes a control unit for adjusting the, the oil tank is installed in the frying area in which the food of the upper side is accommodated in the oil tank, and the overheat prevention sensor for stopping the operation of the heating unit by detecting whether the temperature of the oil in the oil tank reaches a certain temperature; ; A first temperature sensor formed at a height corresponding to the overheat prevention sensor and measuring a temperature in the oil tank; And a second temperature sensor formed on a side surface of the heating unit under the frying area of the oil tank to measure a temperature in the oil tank, wherein the controller measures the temperature measured by the second temperature sensor to be measured by the first temperature sensor. When the temperature rises above the reference temperature is characterized in that it comprises a fire blocking unit for stopping the operation of the heating unit.

According to another embodiment of the present invention, in the fryer capable of preventing fire according to the present invention, the fire blocking unit includes: a first temperature information receiving module receiving first temperature information measured by the first temperature sensor; A second temperature information receiving module receiving second temperature information measured by a second temperature sensor, a temperature difference calculating module calculating a difference between the first temperature information and the second temperature information, and a high risk of fire. A reference temperature determination module for setting a difference between the temperature information and a fire risk detection module for generating a fire hazard signal when a temperature difference calculated by the temperature difference calculation module exceeds a temperature set by the reference temperature determination module; And, when the fire hazard signal is generated, characterized in that it comprises a heating unit operation stop module for stopping the operation of the heating unit.

According to another embodiment of the present invention, in the fryer capable of preventing fire according to the present invention, the reference temperature set by the reference temperature determining module is set to be 22 ° C to 28 ° C.

According to another embodiment of the present invention, in the fryer capable of preventing fire according to the present invention, the fire blocking unit calculates a difference between the first and second temperature information calculated by the temperature difference calculating module at a predetermined time interval, and the temperature difference. Further comprising a slope calculation module for calculating a slope to be changed, wherein the reference temperature determining module is characterized in that to determine the reference temperature according to the slope calculated by the slope calculation module.

According to another embodiment of the present invention, in the fryer capable of preventing fire according to the present invention, the reference temperature determination module lowers the reference temperature when the slope calculated by the slope calculation module exceeds a set value. If the slope is less than the set value, characterized in that to increase the reference temperature.

According to another embodiment of the present invention, in the fryer capable of preventing fire according to the present invention, the reference temperature determining module may set the reference temperature to 22 ° C. when the slope calculated by the gradient calculation module exceeds a set value. It is characterized in that the reference temperature to 25 ℃ ~ 28 ℃ when the calculated slope is less than the set value.

According to another embodiment of the present invention, in the fire protection fryer according to the present invention, the oil tank is a third temperature sensor for measuring the temperature of the cooling zone in the oil tank formed under the heating portion, oil in the oil tank It includes an oil outlet for discharging to the outside, wherein the control unit controls the discharge of oil through the oil outlet in accordance with the difference between the temperature measured by the first temperature sensor and the temperature measured by the third temperature sensor It characterized in that it comprises an oil discharge control unit.

According to another embodiment of the present invention, in the fryer capable of preventing fire according to the present invention, the oil discharge control unit is provided through the oil outlet when the temperature difference between the first temperature sensor and the third temperature sensor is less than a predetermined value. It is characterized in that the oil is discharged.

The present invention can obtain the following effects by the configuration, combination, and use relationship described above with the present embodiment.

The present invention measures the temperature in the oil tank by a first temperature sensor formed at a height corresponding to the overheat prevention sensor and a second temperature sensor formed at one side of the heating part in the oil tank to measure the temperature in the oil tank to calculate the difference. When the temperature of the second temperature sensor is higher than the temperature of the first temperature sensor, the fire hazard signal is generated to stop the operation of the heating unit. In this case, there is an effect of preventing the fire by detecting the risk of fire in advance.

According to the present invention, the reference value for the temperature difference between the first temperature sensor and the second temperature sensor may be set appropriately, so that an accurate fire risk may be detected.

The present invention measures the amount of change in the temperature difference between the first and second temperature sensors at regular time intervals to calculate the inclination, and by changing the reference temperature according to the inclination value, the amount of oil in the oil tank second temperature sensor The fire hazard is distinguished by dividing the case below and the case where the second temperature sensor is abnormal, so that the fire can be more surely blocked.

The present invention is to measure the temperature of the lower cooling area of the heating unit through the third temperature sensor, when the temperature is lowered by a predetermined value or more than the temperature measured by the first temperature sensor outside the residue accumulated on the floor through the discharge of oil By discharging it, it is effective to minimize oxidation of oil.

1 is a block diagram of a fryer capable of preventing fire according to an embodiment of the present invention
2 is a reference diagram showing the configuration of the oil tank of FIG.
3 is a block diagram showing a configuration of an overheat prevention unit
4 is a block diagram showing a configuration of a fire blocking unit;
Figure 5 is a block diagram showing the configuration of the oil discharge control unit
6 is a block diagram showing a configuration of a control unit according to another embodiment of the present invention.
7 is a block diagram showing the configuration of the target temperature heating unit of FIG.
8 is a block diagram illustrating a configuration of an aperture start unit of FIG. 6.
9 is a block diagram illustrating a configuration of a cooking time adjusting unit of FIG. 6.
10 is a block diagram showing a configuration of a heating control unit of FIG.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the fryer capable of preventing fire according to the present invention will be described in detail. In the following description of the present invention, if it is determined that a detailed description of a known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. Throughout the specification, when a part is said to "include" any component, which means that it may further include other components, except to exclude other components unless specifically stated otherwise, also described in the specification The terms "... unit", "... module" and the like refer to a unit for processing at least one function or operation, which may be implemented by hardware or software or a combination of hardware and software.

Referring to FIGS. 1 to 5, the fryer capable of preventing fire according to an embodiment of the present invention is installed in the oil tank 1 and the oil tank 1 for receiving oil for cooking food. And a heating part 3 for heating the oil contained in the oil tank 1, and a control part 5 for controlling the operation of the fryer.

As discussed in the background, a fire caused by a fryer, especially a commercial fryer, is caused by abnormal overheating due to component failure, insufficient input of oil or overheating by the complete discharge of oil. In particular, when the user adds less than the appropriate amount of oil, or the oil is discharged without properly closing the oil outlet 15, or the oil leaks, or the day before the user does not know that the oil is discharged to start heating without oil Fire caused by user's mistake accounts for more than 80% of all fires.

In general, in the fryer oil tank (1) to install a temperature sensor on the upper side of the heating unit to measure the temperature of the oil, the operation of the fryer according to the temperature of the oil to be measured, and prevents the oil rises above a certain temperature To prevent fire. However, if the oil is filled below the temperature sensor on the upper side of the heating unit, the temperature of the oil cannot be measured properly, resulting in a fire due to the overheating of the oil, and when the heating starts with no oil at all. 1) It will overheat itself, increasing the risk of fire. Therefore, in the present invention, the first temperature sensor 12 of the corresponding height is installed together with the overheat prevention sensor 11, and the second temperature sensor 13 is additionally installed on the side of the heating unit 3 to obtain oil. Even if there is no shortage or absence, it is possible to cut off the overheating of the oil tank (1) or oil at all times, thereby significantly reducing the risk of fire caused by a fryer.

The oil tank (1) is configured to form a predetermined space for accommodating oil, the heating portion (3) is formed inside the oil to be heated, the bottom of the oil outlet for discharging the oil is Allow the oil formed and used to be discharged with the scum. The oil tank 1 is formed on the upper side of the heating unit 3 as shown in FIG. 2, and is directly fried by the heating unit 3 on both sides of the heating unit 3 and the fried region 1a. It can be divided into a heating region 1b in which heating is performed and a cooling region 1c formed below the heating section 3 and having a relatively low temperature.

Therefore, the first temperature sensor 12 is installed in the frying region 1a to measure the temperature of oil, and the heating unit 3 operates according to the temperature measured by the first temperature sensor 12. Adjust so that food is properly fried. Further, as the cooling zone 1c is formed below the heating section 3, the dregs of the frying water are accumulated in the cooling zone 1c having a relatively low temperature, thereby oxidizing oil generated by burning the dregs. To prevent it. The temperature of the cooling zone 1c is discharged through the oil outlet 15 according to the temperature measured by the third temperature sensor 14. In particular, the second temperature sensor 13 and the first temperature are formed on the heating region 1b of the oil tank 1, more precisely, on one side of the heating part 3. It is possible to detect a fire risk according to the difference in temperature measured by the sensor 12.

The oil tank 1 includes an overheat prevention sensor 11, a first temperature sensor 12, a second temperature sensor 13, and a third temperature sensor 14, and an amount of oil introduced into the oil tank 1. Regardless of whether it is possible to prevent fire due to overheating.

The overheat prevention sensor 11 is installed in the frying region 1a of the oil tank 1 and operates according to a specific temperature of oil. For example, a bimetallic mechanical sensor may be applied. To generate a specific signal. The overheat prevention sensor 11 may be set to a specific temperature at risk of fire to the operating temperature to prevent the temperature of the oil is overheated, and generates a signal when a specific temperature is to be described later of the control unit 5 The overheat protection unit 51 is operated.

The first temperature sensor 12 is formed to a height corresponding to the overheat prevention sensor 11 to measure the temperature, it is possible to control the operation of the heating unit 3 by measuring the temperature of the oil. In addition, the first temperature sensor 12 transmits the measured temperature information to the fire cutout 52, which will be described later, of the controller 5, and is compared with the temperature measured by the second temperature sensor 13. Even if there is not enough oil, it can detect overheating and shut off the fire.

The second temperature sensor 13 is formed on one side of the heating unit 3 to measure the temperature, and is transmitted to the fire blocking unit 52 of the control unit 5 so as to transmit the first temperature sensor 12. Allow the temperature measured by to be compared. When less oil is added to the oil tank 1 or less than the first temperature sensor 12, the temperature of the oil cannot be properly measured by the first temperature sensor 12 and the overheat prevention sensor 11, and the temperature is lower. The temperature measured by the second temperature sensor 13 will show a sharp increase in temperature due to the small amount of oil and its proximity to the heating section 3. In addition, even when there is no oil at all, the second temperature sensor 13 shows a more rapid temperature increase than the first temperature sensor 12 as it is located at one side of the heating unit 3. Therefore, when the temperature of the second temperature sensor 13 rises by a predetermined value or more than the temperature of the first temperature sensor 12, the present invention detects a fire risk and stops or stops the operation of the heating unit 3. By notifying, the risk of fire can be cut off regardless of the amount of oil in the oil tank (1).

The third temperature sensor 14 is formed in the cooling zone of the oil tank 1 to measure temperature, and transmits temperature information to the oil discharge control unit 53, which will be described later, of the controller 5. Since the temperature measured by the third temperature sensor 14 is gradually lowered when the residue accumulates in the cooling zone, when the difference between the temperature measured by the first temperature sensor 12 is greater than a predetermined value, the residue It is judged that a lot of oil is accumulated and discharge of oil and debris is made.

The oil outlet 15 is formed on the bottom side of the oil tank 1 to discharge oil in the oil tank 1, and a separate valve (not shown) may be formed to control the discharge of oil. Discharge of the oil through the oil outlet 15 is made through the oil discharge control unit 53 of the control unit 5, and the valve (not shown) according to the temperature measured by the third temperature sensor 14 It can be operated automatically to allow discharge, and of course it is also possible to operate the valve manually.

The heating unit 3 is configured to heat the oil in the oil tank 1, and is formed at the lower side of the oil tank 1 so that food is introduced and fried at an upper side thereof, and a cooling zone 1c under the heating unit 3 is provided. ) Is formed so that the residue can be stored on the floor without burning. The heating unit 3 is preferably formed of a burner that generates heat in accordance with the supply of gas, it may be formed of an electric heater that generates heat in accordance with the supply of electricity. The heating unit 3 may be operated according to the temperature measured by the first temperature sensor 12, the operation is stopped when a specific temperature is detected by the overheat prevention sensor 11, the fire By the blocking unit 52, the oil discharge control unit 53 to stop the operation to prevent the fire can be made to discharge the residue accumulated on the floor.

The control unit 5 is configured to adjust the operation of the fryer, as shown in Figure 1 may include an overheat prevention unit 51, fire cutout 52, oil discharge control unit 53.

The overheat prevention unit 51 is configured to stop the operation of the heating unit 3 in response to a signal generated by the overheat prevention sensor 11, and the heating unit through operation of a gas valve or adjustment of an electric supply. Stop operation of (3). Since the overheat prevention sensor 11 generates a specific signal when a certain temperature at which there is a risk of fire occurs, the overheat prevention unit 51 stops the operation of the heating unit 3 according to this signal, so that oil Prevent heat above the risk of fire. To this end, the overheat prevention unit 51 receives a signal transmitted from the overheat prevention sensor 11 by the sensor information receiving module 511 as shown in FIG. 3, and the heating unit operates according to the received signal. The stop module 512 stops the operation of the heating unit 3.

The fire cut-off unit 52 is configured to cut off the fire by detecting overheating even when oil in the oil tank 1 is insufficient, which is measured by the first temperature sensor 12 (hereinafter referred to as 'first temperature'). 2) and the temperature measured by the second temperature sensor 13 (hereinafter referred to as 'second temperature') to detect the fire risk. As described above, the second temperature is formed at one side of the heating unit 3 to have a higher value than the first temperature, and when the oil is insufficiently introduced to become the first temperature sensor 12 or less, the first temperature. The sensor 12 does not measure the temperature of the oil properly and has a lower value than the temperature of the oil, and the second temperature measured by the second temperature sensor 13 rises faster due to the small amount of oil, thereby increasing the first temperature. The difference between and becomes bigger. Therefore, the fire cutout 52 sets a reference temperature for the difference between the first and second temperatures, and detects the danger of fire when the second temperature rises above the reference temperature by more than the first temperature. In addition, when the amount of oil in the oil tank 1 is lower than the position of the second temperature sensor 13, the second temperature measured by the second temperature sensor 13 is changed by the radiant heat by the heating unit 3. It rises faster than it exists. Therefore, in this case, the reference temperature is set low so that a faster fire detection is possible. In other words, when setting the same reference temperature when the height of the oil is lower than the second temperature sensor 13 and the second temperature rises more quickly, the oil tank 1 is stopped even if the operation of the heating unit 3 is stopped at the same reference temperature. Temperature rises more quickly, increasing the risk of fire. Therefore, the fire cutout 52 calculates the slope at which the difference between the first and second temperatures increases, so that when the slope becomes larger than a predetermined value, the reference temperature is set lower so that the fire risk can be more effectively blocked. . To this end, the fire blocking unit 52 is the first temperature information receiving module 521, the second temperature information receiving module 522, the temperature difference calculation module 523, the slope calculation module 524 as shown in FIG. ), A reference temperature determination module 525, a fire hazard detection module 526, a heating unit operation stop module 527, and a fire hazard notification module 528.

The first temperature information receiving module 521 is configured to receive temperature information (hereinafter referred to as 'first temperature') measured by the first temperature sensor 12 and is transmitted to the temperature difference calculation module 523. The temperature difference with the temperature information received by the second temperature information receiving module 522 is calculated.

The second temperature information receiving module 522 is configured to receive temperature information measured by the second temperature sensor 13 so that a temperature difference from the first temperature is calculated.

The temperature difference calculation module 523 is configured to calculate the difference between the first temperature and the second temperature, the information on the temperature difference is transmitted to the slope calculation module 524 to calculate the degree of change of the temperature difference, The fire hazard detection module 526 is transmitted to the comparison with the reference temperature to detect the fire risk.

The slope calculation module 524 is configured to calculate a slope that changes with respect to the difference between the first and second temperatures calculated by the temperature difference calculation module 523, and calculates and calculates the change amount of the temperature difference per predetermined time. have. Accordingly, the slope calculation module 524 may determine at what speed the difference between the first and second temperatures is changing, and the calculated slope sets the reference temperature by the reference temperature determining module 525. Make it a standard.

The reference temperature determination module 525 is configured to set a value (hereinafter referred to as a 'reference temperature') of the difference between the first temperature and the second temperature, which is a reference for the risk of fire, and the fire hazard detection module ( In 526, if the difference between the first and second temperatures calculated by the temperature difference calculation module 523 exceeds a reference temperature, it is detected as a fire risk. If the reference temperature set by the reference temperature determination module 525 is too high, a fire may occur before the fire is detected before the fire is detected, and if the reference temperature is too low, a fire hazard is not a fire hazard. Is detected there is a problem to stop the operation of the fryer. Therefore, it is important that the reference temperature determination module 525 sets a reference temperature that can accurately detect a fire risk and prevent a false risk detection. When the reference temperature is 22 ° C. to 28 ° C., preferably 25 ° C. It was found to be the most accurate way to detect a fire hazard.

In addition, as described above, the difference between the second temperature and the first temperature indicates a sharp increase than when the height of the oil is lower than the second temperature sensor 13 when the height of the oil is lower than the second temperature sensor 13. Therefore, when the fire hazard is detected at the same reference temperature, even if the operation of the heating unit 3 is stopped, the temperature of the oil tank 1 may continuously increase to cause a fire. Therefore, when the difference between the first and second temperatures increases rapidly, it is necessary to lower the reference temperature to detect the fire risk more quickly. Therefore, the reference temperature determination module 525 determines the reference temperature according to the slope of the change in the first and second temperature differences calculated by the slope calculation module 524, and the slope at which the first and second temperature differences increase. If the reference value is larger than the predetermined value, the reference temperature is lowered. Accordingly, the reference temperature determination module 525 sets the reference temperature to 22 ° C. to 25 ° C. when the slope is larger than a predetermined value, and sets the reference temperature to 25 ° C. to 28 ° C. when the slope is smaller than a predetermined value. In this case, it was confirmed that the fire risk can be minimized and the error of fire risk detection can be reduced.

The fire risk detection module 526 is a difference between the first and second temperatures calculated by the temperature difference calculation module 523, that is, the degree by which the second temperature is larger than the first temperature by the reference temperature determining module 525. When the temperature is greater than the determined temperature to generate a fire hazard signal, the heating unit operation stop module 527 to stop the operation of the heating unit 3, the fire hazard notification module 528 to the user Be alert to the danger of fire.

The heating unit operation stop module 527 is configured to stop the operation of the heating unit 3 when the risk of fire is detected in the fire risk detection module 526 to automatically shut off the gas valve or supply electricity. By blocking the operation of the heating unit 3 is stopped.

The fire hazard notification module 528 is configured to notify a user of a danger signal when a fire risk is detected, and may generate a warning sound through a fryer or transmit a danger signal to a separate user terminal. Various methods may be applied.

Therefore, in the present invention, when the oil is overheated due to an abnormal part, even if the oil is insufficiently input or not input at all, even when the temperature of the oil cannot be measured by the temperature sensor, the risk of fire is sensed by the heating unit 3. By stopping the operation and letting the user know, the fire risk is greatly reduced. In addition, it is possible to further reduce the risk of fire by enabling accurate detection of fire risk regardless of the amount of oil.

The oil discharge control unit 53 is configured to control the discharge of oil through the oil discharge port 15, and automatically operates a valve (not shown) of the oil discharge port 15, etc. of the oil in the oil tank 1 Allow discharge to occur. The oil discharge adjusting unit 53 discharges oil automatically according to the amount of residue accumulated on the bottom of the oil tank 1, and the temperature and the first temperature measured by the third temperature sensor 14 formed in the cooling zone. The oil is discharged according to the difference in temperature measured by the temperature sensor 12. In addition, the oil discharge control unit 53 may be dangerous when discharged when the oil is above a certain temperature, so that the oil is discharged only when it falls below a predetermined temperature. To this end, the oil discharge control unit 53 is the first temperature receiving module 531, the third temperature receiving module 532, the temperature difference calculation module 533, the deposition detection module 534 as shown in FIG. It may include an operation stop module 535, a set temperature sensing module 536, and an oil discharge module 537.

The first temperature receiving module 531 receives temperature information from the first temperature sensor 12 and transmits the temperature information to the temperature difference calculating module 533 and the set temperature detecting module 536.

The third temperature receiving module 532 receives temperature information from the third temperature sensor 14 and transmits the temperature information to the temperature difference calculating module 533.

The temperature difference calculation module 533 is configured to calculate a difference between temperature information received from the first temperature sensor 12 and temperature information received from the third temperature sensor 14 (hereinafter referred to as 'third temperature'). The amount of residue accumulated in the cooling zone 1c of the oil tank 1 is determined according to the temperature difference.

The deposition detection module 534 is such that the amount of residue accumulated in the cooling zone 1c of the oil tank 1 is discharged according to the difference between the first temperature and the third temperature calculated by the temperature difference calculation module 533. In this configuration, the first and third temperature differences are detected to fall below a predetermined value. When debris accumulates in the cooling zone 1c of the oil tank 1, the third temperature sensor 14 accumulates in the debris and interferes with the temperature measurement. As the debris accumulates, the temperature of the third temperature sensor 14 is further reduced. The difference from the first temperature is increased. Therefore, the deposition detection module 534 detects that the difference between the first and third temperatures falls below a predetermined value to detect that the residue is accumulated more than a predetermined amount.

The operation stop module 535 is configured to stop the operation of the heating unit 3 when the deposition detection module 534 detects that a certain amount of debris has accumulated, the heating unit operation stop module 527 and Turn on the gas valve or cut off the electricity supply. When the residue is accumulated in a certain amount or more, if the heating unit 3 continues to operate, the residue burns and oxidizes oil. Therefore, the operation of the heating unit 3 is stopped, and when the temperature of the oil falls below a certain temperature. Wait until the oil is discharged.

The set temperature detection module 536 is configured to detect that the temperature of the oil falls below a predetermined temperature after the operation of the heating unit 3 is stopped by the operation stop module 535, so that safe oil discharge Make it happen. The set temperature sensing module 536 receives a temperature measured from the first temperature sensor 12.

The oil discharge module 537 is configured to discharge oil and debris through the oil discharge port 15 when the temperature of the oil drops to a predetermined temperature by the set temperature detection module 536. ) Automatically operate the valve, etc. so that oil and debris can be discharged.

6 to 10, the fryer includes an oil tank 1, a heating unit 3, and a control unit 5 as in an exemplary embodiment of the present invention. The control unit 5 further includes a target temperature heating unit 54, an aperture start unit 55, a cooking time adjusting unit 56, and a heating adjusting unit 57 as shown in FIG. 6. Thus, the fryer properly controls the temperature of the oil to prevent fire and to ensure that the food has a proper frying degree. The control unit 5 controls the operation of the heating unit 3 according to the temperature measured by the first temperature sensor 12.

Conventional commercial fryer sets the appropriate target temperature according to the type of food to be fried so that the oil is heated, and when the target temperature is reached to stop the operation of the heating unit 3, the residual heat remaining in the oil tank (1) This causes the oil temperature to rise above the target temperature. In recent years, commercial fryer has been in the trend of decreasing the capacity of oil to reduce the use of oil, the rate of increase of the oil is further increased, the degree of exceeding the target temperature exceeds 15 ~ 20 ℃.

Therefore, in recent years, commercial fryers promote oxidation of oil and have a high risk of fire, and it takes a long time to recover to a proper temperature of fry (hereinafter, referred to as a target temperature of -5 ° C to 5 ° C). There is a problem that the fried water burns or loses taste when cooking.

In addition, when the temperature of the oil exceeds the target temperature and the fried water is added, the temperature of the oil is lowered. In the related art, the oil is restored to an appropriate temperature by operating the heating unit 3 while lowering the temperature below the target temperature. I could do it. However, in this case, since the heating unit 3 does not operate until the target temperature is reached, the width of the temperature lowering below the target temperature is large according to the input of the frying water, and thus, the oil takes a long time to recover to the proper temperature. The longer and longer time the fried water stays at a lower temperature than the proper temperature, there is a problem that the taste of the fried water falls.

In addition, the conventional commercial fryer sets the cooking time according to the weight of the frying water to be put into the oil, the user directly selects the weight of the frying water to be put to determine the cooking time of the frying machine. At this time, when the fried water is introduced into the oil tank 1, the temperature of the oil drops sharply by 20 ° C or more. In the related art, the cooking time is determined in consideration of the decrease in temperature according to the weight. However, as the capacity of the oil tank (1) has recently decreased, the decrease in the oil temperature becomes larger, and the decrease in the oil temperature varies depending on the type of the fried food, the frozen state, and the surrounding environment, and the user always measures and inputs the correct weight of the fried food. It is very difficult to make, so the fried water is not fried in the proper cooking time.

Therefore, in the present embodiment, even if the capacity of the oil tank 1 is reduced by controlling the temperature of the oil, the temperature exceeded from the target temperature is minimized. By starting the operation in advance before the temperature is lowered to minimize the temperature drop due to the addition of the fried water, it is possible to quickly recover to the appropriate temperature, thereby reducing the cooking time and improve the taste. In addition, the cooking time of the fryer is not determined according to the weight, but determined according to the width of the temperature lowered by the input of the frying, so that the optimum cooking time can be set, and the cooking determined according to the fall width of the temperature. The time can be set differently according to the sensitivity, and the optimum cooking time setting according to the cooking environment can be drastically improved.

The controller 5 operates the heating unit 3 according to the temperature of the oil in the oil tank 1 measured by the first temperature sensor 12. The control unit 5 sets the target temperature so that the oil is heated to the optimum temperature according to the fried water, and the heating unit 3 operates to raise the temperature of the oil to the target temperature, and when the target temperature is reached The operation of the heating unit 3 is stopped. When the temperature of the oil falls below the target temperature again, the operation of the heating unit 3 is started to maintain the target temperature. In addition, when the temperature of the oil exceeds the target temperature, the control unit 5 operates the heating unit 3 before falling to the target temperature when the temperature of the oil decreases due to the addition of the fry. Reduce the fall of the temperature and allow it to recover quickly to the target temperature. In addition, the control unit 5 allows the cooking time to be determined according to the temperature lowered from the target temperature during the introduction of the fry, so that the optimum cooking time can be set, and the heating step before the target temperature is reached when the oil is heated. Lower the temperature so that the oil temperature exceeds the target temperature. To this end, the control unit 5 includes a target temperature heating unit 54, the aperture start unit 55, the cooking time adjusting unit 56, the heating control unit 57.

The target temperature heating unit 54 is configured to operate the heating unit 3 so that the temperature of the oil in the oil tank 1 maintains the target temperature, and keeps the heating unit 3 until the oil temperature reaches the target temperature. When the target temperature is reached, the operation of the heating unit 3 is stopped. To this end, the target temperature heating unit 54 starts the operation of the heating unit 3 when the target temperature setting module 541 for setting the target temperature as shown in FIG. The heating start module 542, the target temperature detection module 543 for detecting when the temperature measured by the first temperature sensor 12 reaches the target temperature, the heating unit 3 when the target temperature is detected Heating stop module 544 to stop the operation of the. Therefore, the target temperature heating unit 54 maintains the temperature of the oil within the range of -5 ℃ ~ 5 ℃ at the target temperature so that the fried water can be properly fried. However, as described above, even when the operation of the heating unit 3 stops at the target temperature as the capacity of the fryer is recently reduced, the temperature of the oil exceeds the target temperature by 15 to 20 ° C. or more. It is possible to reduce the degree of excess of the target temperature by the heating control unit 57, and if the target temperature is exceeded, the heating unit (3) in advance by the stop start section 55 before falling to the target temperature when the fried water is added To reduce the recovery time to the target temperature.

When the temperature of the oil exceeds the target temperature above a predetermined temperature, the cooking start unit 55 starts the operation of the heating unit 3 to start cooking even before the temperature is lowered to the target temperature after the addition of the fried food. Recently, the commercial fryer is often heated beyond the target temperature by more than 15 ℃ even if the operation of the heating unit 3 stops, and heating starts again only when the temperature of the oil drops to the target temperature. Therefore, even if the temperature of the oil falls to the target temperature, the heating unit 3 does not operate until the target temperature is reached, and thus the width of the falling temperature increases, and the temperature of the oil is returned to the proper temperature. It takes a lot of time to recover. Therefore, a lot of energy is consumed to recover the temperature of the oil, the time is longer, the cooking time is increased, the time for which the fried water stays at a lower temperature, the taste is reduced. Therefore, the opening start unit 55 starts the operation of the heating unit 3 at a starting temperature higher than a target temperature at the time of adding the fried food, thereby reducing the drop in temperature due to the feeding of the fried food, thereby shortening the cooking time. Reduce the energy input for recovery to the proper temperature, and improve the taste of the fried water through a quick recovery to the proper temperature. To this end, the diaphragm starter 55 includes a diaphragm start temperature setting module 551, a diaphragm start operating module 552, a diaphragm start temperature monitoring module 553, and a heating unit operating module 554. It may include.

The aperture start temperature setting module 551 is configured to set a temperature higher than a target temperature at which the operation of the heating unit 3 starts. For example, when the target temperature is 180 ° C, the aperture start temperature is set to 183 ° C. can do. Accordingly, after the temperature of the oil is heated to 180 ° C. according to the operation of the heating unit 3 at the start of cooking, the operation of the heating unit 3 is turned off, but due to the residual heat remaining in the oil tank 1, When the temperature exceeds 183 ° C, the operation of the aperture start temperature monitoring module 553 is started by the aperture start operation module 552 to monitor that 183 ° C is sensed again, and 183 ° C, which is the aperture start temperature, is detected again. In this case, it is possible to operate the heating unit 3 through the heating unit operation module 554.

The stopper operation module 552 starts the operation of the heating unit 3 by the operation of the separate cooking start button of the fryer, and reaches the target temperature, the operation of the heating unit 3 is turned off, and then the temperature of the oil stops. When the aperture start temperature set by the temperature setting module 551 is reached, the operation of the aperture start temperature monitoring module 553 is started. Therefore, it is possible to monitor that the temperature of the oil falls below the aperture start temperature again. In addition, the stopper operation module 552 to operate only when the fried water is added, the operation is executed only when pressing a separate start button to detect that the temperature of the oil reaches the aperture start temperature Accordingly, the aperture start temperature monitoring module 553 may be executed.

The aperture start temperature monitoring module 553 is configured to monitor the temperature of the oil exceeding the aperture start temperature falls below the aperture start temperature again when the operation is started by the aperture start operation module 552. If it is monitored to fall below to execute the heating unit operating module 554.

The heating unit operation module 554 to operate the heating unit 3 when the temperature of the oil exceeding the aperture start temperature falls below the aperture start temperature again by the aperture start temperature monitoring module 553. do. Therefore, the heating unit operation module 554 may operate the heating unit 3 before the temperature of the oil falls to the target temperature. Therefore, it is possible to reduce the width of the falling oil temperature in accordance with the input of the fried water, thereby enabling a quick recovery to the appropriate temperature, it is possible to shorten the cooking time and reduce energy use, improve the taste.

The cooking time adjusting unit 56 is configured to adjust the cooking time according to the temperature of the oil falling from the target temperature at the time of the introduction of the fried food, so that the cooking time for producing an optimal taste can be set accurately. As described above, the conventional frying machine is configured to determine the cooking time according to the weight, and when the user inputs the wrong weight of frying water, accurate cooking cannot be performed, and it is very cumbersome to add the weight correctly every time. In particular, large fast food restaurants or chicken restaurants, such a task is more difficult to reduce the taste of chicken, French fries and the like. In addition, even if the fried foods have the same weight, the temperature is lowered when the fried food is added depending on the frozen state, the ambient temperature, and the type of the fried food, and thus there is a problem that the appropriate cooking time is changed. Therefore, in the present embodiment, to solve this problem, the cooking time is determined according to the difference of the temperature falling from the target temperature. In this case, the accurate frying time is calculated regardless of the weight of the fried food, the frozen state, the ambient temperature, and the type of the fried food. To ensure proper cooking. In addition, the cooking time adjusting unit 56 determines the cooking time according to the temperature lowered for each set sensitivity by setting the sensitivity of the various stages, so as to find and set the optimum cooking time for the user's environment and the product to be fried. To be able. To this end, the cooking time adjusting unit 56, the cooking time setting module 561 for each falling temperature, the cooking time setting module 562 for each sensitivity, the sensitivity selection module 563, the falling temperature determination, as shown in FIG. The module 564 may include a cooking time determining module 565.

The falling temperature cooking time setting module 561 is configured to set the cooking time according to the difference between the falling temperature and the target temperature according to the input of the fried water, the longer the difference in temperature, the longer the cooking time, oil tank (1) The optimum cooking time is set by calculating the time required to recover to the target temperature according to the capacity of.

The sensitivity-based cooking time setting module 562 is configured to adjust and set the cooking time for each falling temperature set by the falling temperature-specific cooking time setting module 561 according to sensitivity, for example, sensitivity of 1 to 10 steps. Can be set to have. For example, when the sensitivity is low, the change in cooking time according to the falling temperature may be adjusted less. When the sensitivity is high, the change in cooking time according to the falling temperature may be adjusted. Therefore, each user may set the same product to a certain sensitivity to grasp the degree of frying, and then set the sensitivity to have an optimal frying degree to allow continuous frying to be performed.

The sensitivity selection module 563 is configured to store the sensitivity selected by the user, and the user selects the optimal sensitivity to store the input information to adjust the cooking time according to the sensitivity.

The falling temperature determination module 564 is configured to sense the falling temperature when the fried water is added, so that the difference between the lowest temperature and the target temperature to determine the falling temperature. Therefore, the cooking time is determined according to the falling temperature determined by the falling temperature determination module 564.

The cooking time determination module 565 is configured to determine the cooking time according to the falling temperature determined by the falling temperature determination module 564, and considers the cooking time in consideration of the sensitivity set by the sensitivity selection module 563. Make a decision. Accordingly, the present invention can cook fried tempura according to the optimum cooking time selection regardless of the type of product to be fried, and can maintain the quality of the fried tempura uniformly.

The heating control unit 57 lowers the heating degree of the heating unit 3 before the predetermined temperature of the target temperature so as to lower the degree that the temperature of the oil exceeds the target temperature. As described above, as the capacity of the oil tank 1 decreases, the heating speed of the oil is further increased. Accordingly, even if the operation of the heating unit 3 is stopped at the target temperature, the degree of exceeding the target temperature is 15 to 20 ° C. Is exceeding. Therefore, the heating control unit 57 lowers the heating step before the predetermined temperature of the target temperature during the operation of the heating unit 3 to slow down the heating rate of the oil. In addition, the heating speed of the oil is larger as the capacity of the oil tank 1 is smaller, and the width between the target temperature and the minimum temperature of the oil is larger, so that the residual heat remaining in the oil tank 1 becomes larger as the oil tank 1 is heated longer. Increase the temperature above which the oil temperature exceeds the target temperature. Accordingly, the heating control unit 57 adjusts the timing of lowering the heating stage and the lowering heating stage according to the difference between the capacity of the oil tank 1 and the target temperature and the lowest temperature, so that the temperature of the oil exceeds the target temperature. Try to minimize the amount of To this end, the heating control unit 57 includes a capacity setting module 571, falling temperature sensing module 572, heating stage adjustment module 573, adjustment time determination module 574, as shown in FIG. can do.

The capacity setting module 571 is configured to set the capacity of the oil tank 1, so that the adjustment time of the heating step and the heating step can be adjusted according to the capacity. When the capacity of the oil tank 1 is small, the heating speed of the oil is large, so the heating step is further lowered and the adjustment time of the heating step is increased. When the capacity of the oil tank 1 is large, the oil heating speed is relatively small. It lowers the heating stage and slows down the adjustment of the heating stage.

The falling temperature detection module 572 is configured to detect the difference between the lowest temperature and the target temperature of the falling oil when the fried water is added, so that the adjustment time of the heating step and the heating step is adjusted by using the difference between the minimum temperature and the target temperature. do. If the difference between the minimum temperature and the target temperature is large, the residual heat remaining in the oil tank (1) is large enough to exceed the target temperature. Therefore, the heating stage is further lowered and the adjustment time of the heating stage is increased. If the difference is small, the opposite is true.

The heating step adjusting module 573 adjusts the heating step according to the difference between the capacity of the oil tank 1 set by the capacity setting module 571 and the minimum temperature and the target temperature detected by the falling temperature sensing module 572. In this configuration, the adjustment ratio of the heating stage according to the capacity and the falling temperature is set, and the heating stage is lowered according to the determined ratio. As described above, the heating step adjusting module 573 lowers the heating step by a large ratio as the capacity is smaller and the lowering temperature is larger.

The adjustment time determination module 574 is configured to adjust the time when the heating step is lowered by the heating step adjustment module 573, so that the smaller the capacity, the faster the adjustment time as the falling temperature increases. The adjustment time determination module 574 determines the adjustment time of the heating step in consideration of the capacity, the falling temperature, and the heating step adjusted by the heating step adjustment module 573. If the adjustment time is too fast, there is a problem that the cooking time is delayed because the heating time is too long, so that the adjustment time determination module 574 may determine the optimum adjustment time in consideration of the degree of exceeding the target temperature.

In the above, the Applicant has described various embodiments of the present invention, but these embodiments are merely one embodiment for implementing the technical idea of the present invention, and any changes or modifications may be made to the present invention as long as the technical idea of the present invention is implemented. It should be interpreted as falling within the scope of.

1: oil tank
1a: frying zone 1b: heating zone 1c: cooling zone
11: overheat prevention sensor 12: 1st temperature sensor 13: 2nd temperature sensor
14: third temperature sensor 15: oil outlet
3: heating section
5: control unit
51: overheat protection unit 511: sensor information receiving module 512: heating unit operation stop module
52: fire blocking unit 521: first temperature information receiving module 522: second temperature information receiving module
523: temperature difference calculation module 524: gradient calculation module 525: reference temperature determination module
526: fire hazard detection module 527: heating operation stop module 528: fire hazard notification module
53: oil discharge control unit 531: first temperature receiving module 532: second temperature receiving module
533: temperature difference calculation module 534: deposition detection module 535: operation stop module
536: set temperature sensing module 537: oil discharge module
54: target temperature heating unit 541: target temperature setting module 542: heating start module
543: target temperature detection module 544: heating stop module 55: aperture start
551: aperture start temperature setting module 552: aperture start operation module
553: aperture start temperature monitoring module 554: heating operation module
56: cooking time control unit 561: cooking time setting module for each falling temperature
562: cooking time setting module for each sensitivity 563: sensitivity selection module
564: falling temperature determination module 565: cooking time determination module 57: heating control unit
571: capacity setting module 572: falling temperature detection module
573: heating step adjustment module 574: adjustment time determination module

Claims (8)

An oil tank containing oil for cooking food, a heating unit installed in the oil tank to heat the oil contained in the oil tank, and a control unit controlling the operation of the fryer,
The oil tank,
An overheat prevention sensor installed at a frying area in which food on the upper side of the oil tank is accommodated and detecting whether a temperature of oil in the oil tank reaches a predetermined temperature to stop the operation of the heating unit; A first temperature sensor formed at a height corresponding to the overheat prevention sensor and measuring a temperature in the oil tank; And a second temperature sensor formed at a side of the heating unit under the frying area in the tank to measure a temperature in the tank.
The control unit,
And a fire blocking unit to stop the operation of the heating unit when the temperature measured by the second temperature sensor rises above the reference temperature by the temperature measured by the first temperature sensor.
The fire blocking unit,
A first temperature information receiving module receiving first temperature information measured by the first temperature sensor, a second temperature information receiving module receiving second temperature information measured by the second temperature sensor, and the first temperature information receiving module receiving the first temperature information measured by the second temperature sensor; A temperature difference calculation module for calculating the difference between the first temperature information and the second temperature information, a reference temperature determining module for setting the difference between the first and second temperature information with high risk of fire, and a temperature calculated by the temperature difference calculation module. A fire hazard detection module for generating a fire hazard signal when the difference exceeds a temperature set by the reference temperature determination module, and a heating unit operation stopping module for stopping the operation of the heater if a fire hazard signal is generated;
The reference temperature set by the reference temperature determining module is a fryer capable of preventing fire, characterized in that the 22 ℃ to 28 ℃. delete delete According to claim 1, wherein the fire blocking unit
Further comprising a slope calculation module for calculating the slope at which the temperature difference is changed by calculating the difference between the first and second temperature information calculated by the temperature difference calculation module at a predetermined time interval,
The reference temperature determining module is a fryer capable of preventing fire, characterized in that to determine the reference temperature according to the slope calculated by the slope calculation module. The method of claim 4, wherein the reference temperature determination module
When the slope calculated by the slope calculation module exceeds the set value, the reference temperature is lowered, and when the calculated slope is less than the set value, the fire protection capable fryer characterized in that to increase the reference temperature. The method of claim 5, wherein the reference temperature determination module
When the slope calculated by the slope calculation module exceeds the set value, the reference temperature is 22 ℃ to 25 ℃, if the calculated slope is less than the set value characterized in that the reference temperature to 25 ℃ ~ 28 ℃ The fryer which can prevent fire. The oil tank of claim 1, wherein the oil tank is
It includes a third temperature sensor for measuring the temperature of the cooling zone in the oil tank formed on the lower side of the heating portion, and an oil outlet for discharging oil in the oil tank to the outside,
The control unit,
Fire prevention fryer characterized in that it comprises an oil discharge control unit for controlling the discharge of oil through the oil outlet in accordance with the difference between the temperature measured by the first temperature sensor and the temperature measured by the third temperature sensor . According to claim 7, wherein the oil discharge control unit
When the temperature difference between the first temperature sensor and the third temperature sensor is less than a predetermined value, the fryer capable of preventing fire, characterized in that the oil is discharged through the oil outlet.

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